Monolithic Power Systems Inc. MPQ2019GN-AEC1

Overview

MPQ2019GN-AEC1 from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified adjustable-output linear regulator delivering up to 300mA with 10µA quiescent current, 3V–40V input range, and ±2% output voltage accuracy over temperature. It integrates programmable power-good delay, thermal shutdown, short-circuit protection, and operates from –40°C to +150°C junction temperature-designed for automotive body control modules requiring ultra-low standby power.

For engineers reviewing the MPQ2019GN-AEC1 datasheet, MPQ2019GN-AEC1 pinout, MPQ2019GN-AEC1 application, or MPQ2019GN-AEC1 equivalent, key selection criteria include dropout voltage at 300mA (≤550mV), FB reference of 1.25V, PG threshold hysteresis (5% VFB), SOIC-8 EP thermal resistance (θJA = 50°C/W), and AEC-Q100 Grade 1 qualification for automotive under-hood use.

Technical Context

The MPQ2019GN-AEC1 employs a PMOS pass transistor architecture enabling low-dropout operation across its full 1.25V–15V adjustable output range. Its internal 1.25V bandgap reference feeds an error amplifier that regulates output via external resistor divider on the FB pin, with 50nA typical FB input current ensuring minimal divider loading.

Power-good functionality uses an open-drain PG pin with 88–97% VFB rising/falling thresholds and user-programmable delay via PGDL capacitor (e.g., 47nF yields 5–15ms delay). Thermal shutdown activates at 165°C with 30°C hysteresis, and current limiting trips at 600–1350mA peak, protecting against sustained overload while maintaining 300mA continuous rating.

Key Specifications

Pinout & Package

MPQ2019GN-AEC1 is housed in a thermally enhanced SOIC-8 EP package with exposed pad tied to GND for improved heat dissipation (θJC = 10°C/W). The exposed pad must be soldered to a dedicated ground plane for reliable operation at full load in automotive ambient temperatures.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar adjustable-output LDO applications.

Compared with TPS7B8750QKVURQ1 and NCP160AMX330TBG, MPQ2019GN-AEC1 uniquely combines AEC-Q100 Grade 1 qualification, adjustable output (1.25V–15V), programmable PG delay, and 10µA IQ-making it the sole option for automotive systems requiring flexible rail generation with precise power sequencing and safety-grade reliability.

Availability

MPQ2019GN-AEC1 is available at Aetrix Electronics and suitable for automotive body control modules, ADAS camera ECUs, engine control units, and electric power steering systems requiring stable component supply with AEC-Q100 compliance and long-term production continuity.

Supply support for MPQ2019GN-AEC1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MPQ2019 belongs to MPS's automotive-grade linear regulator product line, engineered specifically for harsh-environment vehicle subsystems requiring ultra-low IQ, wide VIN tolerance, and AEC-Q100 qualification.

FAQ

What is the maximum allowable input voltage for MPQ2019GN-AEC1?

The absolute maximum input voltage is +42V, but the recommended operating range is 3V to 40V. Exceeding 40V risks violating the device's safe operating area during transients like ISO 7637-2 Pulse 5a (load dump), though the part is rated to survive 42V briefly. Continuous operation above 40V is not guaranteed and may accelerate parametric drift.

How does the PGDL pin set power-good delay time?

PGDL sets delay by charging an external capacitor (CPGDL) with a 3–9µA current sourced internally. Delay time tPGDL (ms) ≈ (CPGDL in nF × 1.7V) / IPGDL (µA). For example, a 47nF capacitor yields 5–15ms delay depending on process variation. The PG pin asserts high only after this delay once VFB reaches 93% of target.

Can MPQ2019GN-AEC1 be used with a 12V lead-acid battery without external reverse-voltage protection?

No-external reverse-voltage protection is required if the output may exceed input voltage (e.g., backup battery present). The internal PMOS body diode conducts uncontrolled reverse current, risking damage. A Schottky diode (e.g., 1N5819) in series with IN is recommended to block reverse current while adding minimal forward drop.

What is the minimum output capacitor value for stability?

The minimum stable output capacitor is 0.47µF ceramic (X5R or X7R dielectric). Larger values (e.g., 22µF) improve load transient response and reduce output noise, but 0.47µF is sufficient for basic regulation stability per datasheet AC/DC characterization. Tantalum or electrolytic capacitors are not required.

Does MPQ2019GN-AEC1 support remote sensing of output voltage?

No-MPQ2019GN-AEC1 does not support Kelvin (4-wire) remote sensing. Feedback is taken directly from the FB pin connected to the output node. For applications with significant PCB trace resistance between LDO and load, place the FB divider as close as possible to the output capacitor to minimize IR drop errors.

What thermal derating applies when using MPQ2019GN-AEC1 in a sealed automotive enclosure?

In a sealed enclosure with still air, θJA rises significantly above the datasheet's 50°C/W (measured on 4-layer JEDEC board). Derate output current using PD(MAX) = (150°C − TA)/θJA. At TA = 85°C and estimated θJA = 80°C/W, max continuous power is 0.81W → ~270mA at 3V VOUT, requiring layout optimization or forced airflow for full 300mA.

Is the FB reference voltage trimmed at production?

Yes-the 1.25V FB reference is factory-trimmed to ±2.5% initial accuracy and maintains ±2% over –40°C to +125°C ambient. This trimming enables the ±2% total output voltage accuracy specification across temperature and line/load conditions without external calibration.